Andrew Halpin joined the Faculty in January 2012. He previously held chairs in legal theory at the University of Southampton and Swansea University.

He completed his undergraduate studies and doctoral research at Oxford University, his thesis forming the basis for Rights and Law - Analysis and Theory (1997). His subsequent books are Reasoning with Law (2001), Definition in the Criminal Law (2004), and two coedited collections, Theorising the Global Legal Order (2009), In Pursuit of Pluralist Jurisprudence (2017). While at Southampton he held a British Academy Leverhulme Trust Senior Research Fellowship, and at Swansea posts of Director of Research and Head of School.

Professor Halpin's research interests have extended into areas of Criminal Law, Roman Law and Tort but fall mainly within legal theory, broadly conceived. His research has explored perspectives on law from other disciplines - logic, philosophy of language, politics, and economics - and confronted novel legal phenomena arising in a global context.